package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

/**
 * 删除用户操作，根据输入的用户名删除该用户
 * 要求:使用反编译SQL
 */
public class Test2 {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(), "欢迎删除用户", "删除");
        try (
                Connection connection = DBUtil.getConnection();
        ) {
            String sql = "DELETE FROM userinfo WHERE username = ?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,userInfo.getUsername());
            int num = ps.executeUpdate();
            if (num>0){
                System.out.println("删除成功!");
            }else {
                System.out.println("用户不存在");
            }
        }catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
